intermittent filter

例句：

1. 1. The intermittent rain made the journey difficult.
   间歇性的雨使旅程变得困难。
2. 2.The intermittent light from the street lamps illuminated the path.
   街灯间歇性的光线照亮了小径。
3. 3. The intermittent nature of the disease means that it can be hard to predict its progression.
   这种疾病的间歇性意味着很难预测其进展。